| Weighted Average Interest Rate of Time Deposits, $100,000 or More, Six Months Through 12 Months | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| The weighted average interest rate of domestic and foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more, with maturities of six months through twelve months. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |